Cylinder Head Style:Assembled
Cylinder Head Material:Aluminum
Cylinder Head Finish:Natural
Combustion Chamber Volume (cc):70
CNC-Machined Combustion Chamber:Yes
Intake Runner Volume (cc):260cc
Exhaust Runner Volume (cc):87cc
CNC-Machined Intake Runner:Yes
CNC-Machined Exhaust Runner:Yes
Combustion Chamber Style:Heart
Intake Port Shape:Square
Intake Port Location:Standard
Exhaust Port Shape:Oval
Exhaust Port Location:Standard
Spark Plug Style:Angle
Intake Valves Included:Yes
Intake Valve Diameter (in):2.200 in.
Exhaust Valves Included:Yes
Exhaust Valve Diameter (in):1.600 in.
Valve Springs Included:Yes
Maximum Valve Lift (in):0.650 in.
Outside Diameter of Outer Spring (in):1.300 in.
Damper Spring Included:No
Number of Springs Per Valve:Dual
Lock Style:7 degree
Valve Stem Seals Included:Yes
Rocker Arm Studs Included:No
Rocker Arms Included:No
Rocker Arm Nuts Included:No
Guideplate Pushrod Size:3/8 in.
Valve Cover Mounting Style:Centerbolt
Accessory Bolt Holes Drilled:Yes
Intake Valve Angle:12
Exhaust Valve Angle:12
Valve Guides Included:Yes
Valve Guide Material:Powdered metal
Valve Seats Machined:Yes
Valve Seat Machine Style:3-angle
Valve Seat Material:Ductile iron
Steam Holes Drilled:No
Oiling Style:Through pushrod
Machined for O-Ring:No
Notes:Includes new rocker arm rail mounts for use with LS7 1.8 ratio rocker arms. OEM rocker arm rail mounts will not work with these heads. Does not fit with stock exhaust manifolds; aftermarket headers are required.
GenX® 260 square port LS7 aluminum cylinder heads from Trick Flow® are the best choice for your LS-based performance build for several reasons. The A356-T6 aluminum castings feature more material for increased rigidity and strength. Factory LS7 port locations, valve angles, and valve locations have been maintained to work with existing intakes and pistons. One-piece modular, 2024-T4 billet aluminum rocker arm mounts enhance valvetrain stability and are removable for shaft rocker setups. High flow, high velocity CNC Competition Ported runners with the premium high resolution surface finish provide all-out air flow and performance throughout the entire powerband. Plus there’s clearance for 3/8″ pushrods and through-deck coolant holes that fit all GM LS gasket and block combinations, Trick-Alloy powdered-metal valve guides, and solid stem valves. Fully assembled heads also include Trick Flow® by PAC Racing Pacaloy™ valve springs, steel or titanium spring retainers, die forged steel valve locks, and stainless steel valves.